1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
package tim.prune.function;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import tim.prune.App;
import tim.prune.I18nManager;
import tim.prune.data.DataPoint;
import tim.prune.data.Field;
import tim.prune.data.Latitude;
import tim.prune.data.Longitude;
import tim.prune.function.gpsies.GenericDownloaderFunction;
import tim.prune.function.gpsies.GpsiesTrack;
/**
* Function to load nearby point information from Wikipedia
* according to the currently viewed area
*/
public class GetWikipediaFunction extends GenericDownloaderFunction
{
/** Maximum number of results to get */
private static final int MAX_RESULTS = 20;
/** Maximum distance from point in km */
private static final int MAX_DISTANCE = 15;
/** Username to use for geonames queries */
private static final String GEONAMES_USERNAME = "gpsprune";
/**
* Constructor
* @param inApp App object
*/
public GetWikipediaFunction(App inApp) {
super(inApp);
}
/**
* @return name key
*/
public String getNameKey() {
return "function.getwikipedia";
}
/**
* @param inColNum index of column, 0 or 1
* @return key for this column
*/
protected String getColumnKey(int inColNum)
{
if (inColNum == 0) return "dialog.wikipedia.column.name";
return "dialog.wikipedia.column.distance";
}
/**
* Run method to call geonames in separate thread
*/
public void run()
{
_statusLabel.setText(I18nManager.getText("confirm.running"));
// Get coordinates from current point (if any) or from centre of screen
double lat = 0.0, lon = 0.0;
DataPoint point = _app.getTrackInfo().getCurrentPoint();
if (point == null)
{
double[] coords = _app.getViewport().getBounds();
lat = (coords[0] + coords[2]) / 2.0;
lon = (coords[1] + coords[3]) / 2.0;
}
else {
lat = point.getLatitude().getDouble();
lon = point.getLongitude().getDouble();
}
String descMessage = "";
InputStream inStream = null;
// Example http://api.geonames.org/findNearbyWikipedia?lat=47&lng=9
String urlString = "http://api.geonames.org/findNearbyWikipedia?lat=" +
lat + "&lng=" + lon + "&maxRows=" + MAX_RESULTS
+ "&radius=" + MAX_DISTANCE + "&lang=" + I18nManager.getText("wikipedia.lang")
+ "&username=" + GEONAMES_USERNAME;
// Parse the returned XML with a special handler
GetWikipediaXmlHandler xmlHandler = new GetWikipediaXmlHandler();
try
{
URL url = new URL(urlString);
SAXParser saxParser = SAXParserFactory.newInstance().newSAXParser();
inStream = url.openStream();
saxParser.parse(inStream, xmlHandler);
}
catch (Exception e) {
descMessage = e.getClass().getName() + " - " + e.getMessage();
}
// Close stream and ignore errors
try {
inStream.close();
} catch (Exception e) {}
// Add track list to model
ArrayList<GpsiesTrack> trackList = xmlHandler.getTrackList();
_trackListModel.addTracks(trackList);
// Set status label according to error or "none found", leave blank if ok
if (descMessage.equals("") && (trackList == null || trackList.size() == 0)) {
descMessage = I18nManager.getText("dialog.gpsies.nonefound");
}
_statusLabel.setText(descMessage);
// Show error message if any
if (trackList == null || trackList.size() == 0) {
String error = xmlHandler.getErrorMessage();
if (error != null && !error.equals("")) {
_app.showErrorMessageNoLookup(getNameKey(), error);
}
}
}
/**
* Load the selected track or point
*/
protected void loadSelected()
{
// Find the row selected in the table and get the corresponding track
int rowNum = _trackTable.getSelectedRow();
if (rowNum >= 0 && rowNum < _trackListModel.getRowCount())
{
String coords = _trackListModel.getTrack(rowNum).getDownloadLink();
String[] latlon = coords.split(",");
if (latlon.length == 2)
{
DataPoint point = new DataPoint(new Latitude(latlon[0]), new Longitude(latlon[1]), null);
point.setFieldValue(Field.WAYPT_NAME, _trackListModel.getTrack(rowNum).getTrackName(), false);
_app.createPoint(point);
}
}
// Close the dialog
_cancelled = true;
_dialog.dispose();
}
}
|
